Metallic door.



A. B. WALTHER.

METALLIC DOOR.

APPLICATION FILED MAR. 6, 1912.

Patented Oct. 9, 19W.

2 SHEETS-SHEET l.

A. B. WALTHER.

METALUC 000B..

APPLICATION man MAR. e. 1912.

Patented Oct. 9, 1917.

-2 SHEETS-SHEET 2.

- at opposite narran. sararns Parana' ernten,-

ALBERT BERNHARD WALTHER, OF

JAMESTOWN, NEW YORK, ASSIGNOH, TO DAHL- STROM METALLIC DOOR COIYIIEANY,i OF JAMESTOWN, NEW YORK, A CORPORATION OF N EW YORK.

METALLIC DOOR.

.To all whom t may concern.'

Be it known that I, ALBERT BERNHARD and resident of Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Metallic Doors, ofA which the following is a specification.

My' invention relates to metallic doors and more particularly to suoli as are constructed of sheet metal having vhollow stiles sides of a metallic or other panel.

The primary obj ect of my invention is the production of a door formed of sheet metal and having its seams at the edges of the door so as to form an air-tight double sheet metal door through which neither smoke, hot air or gas can pass.

Another object of my invention is the provision of a door which is principally formed lof two metallic sheets extending the full lengthand width of the door andbeing connected by seams only at-the edges of the door.

'A still further object is the provision of edge seams which are .invisible when the door is finished with a suitable finishing coating.

Still further objects is the provision of a double lock seam reinforced to stifl'en the edge of the door; to provide improved means of securing the rails to the panel portions of-the door; to provide means of securing the door hinges thereto; and tov otherwise improve the construction ofmetallic doors,- as will appear' hereinafter.

To these ends the invention consists in the novel features of construction and arrangement of parts to `be hereinafter ldescribed and more particularly pointed' out in the subjoined claims.

In the drawings: v

Figure l is a side .elevation of a door constructed according to my invention.

Fig. 2 is an enlarged horizontal section taken on line 2&2, Fig. l.

Fig. 3 is an enlarged horizontal section 'taken on line 3 3, Fig. l.

Fig. 4 is a sectional' perspective View of one corner of the door. v I

Fig. 5 is an enlarged vertical section taken .on line 5-5, Fig. l.

Fig. 6 is a sectional perspective view of one corner of the door, without the upper Specification of Letters Patent.

Application flied March e, 1912. serial-No. 681,963.

Patented Oct. 9, i917.

rail and closure plates at 'the upper edge of the door. Fig. 7 is a horizontal section of a doort embodying my invention with a glass panel inserted therein.

has two main portions formed of metallic sheets A, B which extend the full llength and widthof the door, each 'sheet being rolled or otherwise provided with pression C which extends the full length of the sheet, the sides of said panel depressions being deiined by'ornamental moldings D rolled in the sheets and therefore ntegral therewith. are spaced apart to provide hollow'stiles E and spaced panel members. Between the panel members a filling F of asbestos or other non-inflammable material is interposed vvhile the door stiles with ground cork or lother suitable material having the quality of deadening sound.

The edges of the Stiles or door are formed by bending the longitudinal or marginal portions of the two sheets into substantially U-shape, as at G, and at right angles to the faces of the sheet of which they form part (or approximately so). An interlocking strip H. is provided at each which has locking connection with the U- shaped marginal portions o-f the sheets, each of said strips having its marginal portions rebent upon its intermediate portion, as at a central panel de- These twosheets of metal may be filled edge of the door disposelmembers g of the cooperating U- shape portions. These interlocking strips 0ccupy the entire transverse dimension between the side walls of the stil'es and are placed' in position by slipping lthem into the stiles from either end. lVhen properly positioned they 'are rolled together with the U- shaped marginal portions of the sheet so as to providea solid edge of laminated form,

thus making a rigid and strong connection. In this manner a door is'providcd which is formed principally of two sheets of metal seams which stiifen the edges of the door and enable the door to be made of lighter gage material. The double lock seams also lessen the possibility of damage at the .edges .so interlocked at their edges by double lock l N are cut at their end to it moldings Dand Y set, as at to brine' thel ro'ecting ortion flush with the adjacent edge of the door. (.)ne of the side walls of eachv opening I is in line with the inner face of the interlockingv strip H so that when the hinge members are thrust into the door they bear against said interlocking strip, and in order to provide a suitable bearing for the opposite side of the hinge members and with a View of stifening .the door at its hinge' edge, ar reinforcing strip K is fitted into the stile with its edges in contact with opposite sides'o-fthe stile' and with one of its faces in contact with the hinge members. This reinforcing strip preferably made of comparatively thick bar-iron so as to provide a solid foundation for screws L which are passed through openings formed in the double lock ,seam and through registering openings in the hinge members and which screws take.

into the reinforcing strip K.

While the door in the main comprises two metallic sheets, it is finished at the upper' and lower edges by rails M, eachrail comprising two metallic sheets m arranged at' opposite sides of the door and having their inner marginal portions rolled to form moldings N corresponding with -the moldings D between the panel and stiles. The moldings the ends of the fiat portions of the sheets fm abut against the inner edges of the stiles, thus making completely finished connections at these points.

The depressed portions@ of the two sheets A, B are recurved at their upper and'lower ends, as at O, for the purpose of stiffening the edges of the panels formed by such depressed port-ions and also for the purpose ofproviding a space between the two sheets of each rail at their outer edges. In said spaces, channel bars P are inserted for the purpose of stiening the outer edges of the rails, which channel-bars extend into the open upper and lower ends of the stiles 'E and likewise serve to stifen said ends. Facing plates p are .placed against the edges `of the channel bar P with their outer faces flush with the edges of the rails and the end edges of the stil-es, said facing plates being fastened to the channel-bars P by means of screws It. Said channel-bars are riveted, welded, or otherwise suitably secured to the Weense tions engaged or interlocked with the clips S. In vthis man'ner the rail at the upper and lower ends of the door are well stiffened,

resulting in a very rigid door.

In the modification shown vin Fig. 7, thel y stiles U ofthe door are formedV of a single sheet of metalhaving their marginal portions rebent into 'U-shape, as at u, which U-sliapey portions receive the marginal portions of a stiffening bar V similar to the construction shown inthe preceding figures. The inner edge of Aeach stile has ,a straight portion W, and an inwardly extending portion or molding fw forming an'abutment for a pane of glass X held in place by asecuring molding e3. It is to be understood that the inner edges of the rails X are formed like those of the stiles, and that the rails are secured to the stilesat their ends in any approved manner.

It is apparent therefore, that certain features of my invention may as readily be einbodied in a door having a glass panel as one having a metallic panel, and it is also to be understood that certain features of 'Y my invent-ion may be used without other features thereof. Doors varyas to style and form and, therefore, do not admit in all cases of the use of allthe features of'ithis invention. Having thus described my invention, what I claim is: y v

1. A sheet metal door having hollow Stiles and an interposed. panel formed of two sheets 'of metal connected together at the a edges of the door, each sheet eing bent or rolled longitudinally to form one-half, of each stile and an interposed panel portion, said panel portions having free upper and lower ends reciirved upon themselves, and

incassa Within each stile 4having its marginal 4portions rebent to interlock with the Ll-shaped portions of the metal forming the stile, each interlocking strip extending from side Wall to side Wall of the stile and With said U- shaped portion forming an edge Wall having four thicknesses of metal co-eXtensive'With the thicknessof the door.

3. A sheet metal door having the longitudinal marginal portions of its sheetor `sheets bent into substantially U-form land atl right angles to the face of the door, and an interlocking strip connecting said U- formed portions and extending' from upper to. lower end of the door with its longitudinal edges in contact with the side Walls of the stile, thereby providing a solid edge consisting of a plurality. of layers of metal composed only of said interlocking strip and said metal sheet or sheets. u v

In testimony whereof I have set my hand in the presence of tWo subscribing Witnesses vALBERT BERNHARD WALTHER. Witnesses:

JOHN HAGELIN,

E. W. SELLSTROM. 

